这些玻璃导管能够让研究者在数周或是数月后重新观察同样部位的深部大脑。
The guide tubes allow researchers to return to exactly the same location of the deep brain repeatedly over weeks or months.
蒸汽经过塑料导管传到试管过程中，接触到冰冷的玻璃后开始液化。
The steam passes along the plastic tube to the test tube, where it condenses on contact ith the ice-cooled glass.
科学家可以通过导管尾端的一个玻璃窗观察大脑的内部结构。
The guide tubes have glass Windows at the ends through which scientists can examine the interior of the brain.
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